Year	Number
2006-01-01	373295
2007-01-01	418439
2008-01-01	512582
2009-01-01	573159
2010-01-01	530983
2011-01-01	530412
2012-01-01	554482
2013-01-01	573190
2014-01-01	578478
2015-01-01	558253
2016-01-01	527811
2017-01-01	523576